45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
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# smtp_test.py
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import os, smtplib, ssl
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from email.message import EmailMessage
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from dotenv import load_dotenv
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load_dotenv(".env")
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SMTP_HOST = os.getenv("SMTP_HOST", "smtp.163.com")
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SMTP_USER = os.getenv("SMTP_USER") # 必须是完整邮箱
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SMTP_PASS = os.getenv("SMTP_PASSWORD") # 163“客户端授权码”
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FROM = os.getenv("MAIL_FROM", SMTP_USER) # 建议与 SMTP_USER 相同
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TO = SMTP_USER # 先给自己发一封
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assert SMTP_USER and SMTP_PASS, "缺少 SMTP_USER/SMTP_PASSWORD 环境变量"
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def make_msg():
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m = EmailMessage()
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m["Subject"] = "SMTP 测试 - 465/587"
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m["From"] = FROM
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m["To"] = TO
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m.set_content("hello from smtp_test.py")
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return m
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ctx = ssl.create_default_context()
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# 先 465/SSL
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try:
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print(">>> try SSL 465")
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with smtplib.SMTP_SSL(SMTP_HOST, 465, context=ctx, timeout=20) as s:
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s.set_debuglevel(1)
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s.login(SMTP_USER, SMTP_PASS)
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s.send_message(make_msg())
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print("OK via 465/SSL")
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except Exception as e:
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print("465 failed:", e)
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print(">>> fallback STARTTLS 587")
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with smtplib.SMTP(SMTP_HOST, 587, timeout=20) as s:
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s.set_debuglevel(1)
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s.ehlo()
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s.starttls(context=ctx)
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s.ehlo()
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s.login(SMTP_USER, SMTP_PASS)
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s.send_message(make_msg())
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print("OK via 587/STARTTLS")
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